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김지연,이경순,유언희,이유미,정서영,황소희,우혜경,정혜진 梨花女子大學校 藥學硏究所 1986 梨花藥學硏究 Vol.- No.25
Addition of a coloring agent to groceryes is a generally available method to stimulate one's appetite. In order to investigate to use a coloring agent according to the rules, we take yellow radish and rainbow rice cake selling in the market for a sample. At first, we extracted coloring matter from the sample and examined qualitative and quantitive analysis. We used woolen yarn method as qualitative analysis and paperchromatography method as identification, uv method as quantatitive analysis. According to the result of the experiment, none of sample was used non permission coloring matter but it is permission coloring matter, it's amount to be found surplus.
DC 마그네트론 스터링법을 이용하여 증착한 Ga, Al, In 첨가 ZnO 박막의 특성
박상은(Sang-eun Park),박세훈(Se-hun Park),Lue jie,송풍근(Pung-Keun Song) 한국표면공학회 2008 한국표면공학회지 Vol.41 No.4
Trivalent ions (Ga, Al, In) doped ZnO films were deposited by DC magnetron sputtering on non-alkali glass substrate at substrate temperature of 300℃. We used the different three types of high density (95%~) ceramic sintered disks (doped with Ga₂O₃; 6.65 wt%, Al₂O₃; 3.0 wt%, In₂O₃; 9.54 wt%). This study examined the effect of different dopants (Ga, Al, In) on the electrical, structural, and optical properties of the films. The lowest resistivity of 5.14×10?⁴ Ω㎝ and the highest optical band gap of 3.74 eV were obtained by Ga doped ZnO (GZO) film. All the films had a preferred orientation along the (002) direction, indicating that the growth orientation has a c-axis perpendicular to the substrate surface. The average transmittance of the films was more than 85% in the visible range.